Temple, RC orcid.org/0000-0002-2461-9022, Rosamond, MC, Massey, JR orcid.org/0000-0002-7793-7008 et al. (6 more authors) (2021) Phase domain boundary motion and memristance in gradient-doped FeRh nanopillars induced by spin injection. Applied Physics Letters, 118 (12). 122403. ISSN 0003-6951
Abstract
The B2-ordered alloy FeRh shows a metamagnetic phase transition, transforming from antiferromagnetic to ferromagnetic order at a temperature Tt∼380 K in bulk. In addition to temperature, the phase transition can be triggered by many means such as strain, chemical doping, or magnetic or electric fields. Its first-order nature means that phase coexistence is possible. Here, we show that a phase boundary in a 300-nm-diameter nanopillar, controlled by a doping gradient during film growth, is moved by an electrical current in the direction of electron flow. We attribute this to spin injection from one magnetically ordered phase region into the other driving the phase transition in a region just next to the phase boundary. The associated change in resistance of the nanopillar shows memristive properties, suggesting potential applications as memory cells or artificial synapses in neuromorphic computing schemes.
This work was supported by EPSRC Grant Nos. EP/M018504/1 and EP/M019020/1 and by the Diamond Light Source.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2021, the Author(s). This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Rowan C. Temple, Mark C. Rosamond, Jamie R. Massey, Trevor P. Almeida, Edmund H. Linfield, Damien McGrouther, Stephen McVitie, Thomas A. Moore, and Christopher H. Marrows , "Phase domain boundary motion and memristance in gradient-doped FeRh nanopillars induced by spin injection", Applied Physics Letters 118, 122403 (2021) and may be found at (https://doi.org/10.1063/5.0038950). Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Condensed Matter (Leeds) |
Funding Information: | Funder Grant number EPSRC (Engineering and Physical Sciences Research Council) EP/M018504/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 18 Mar 2021 10:23 |
Last Modified: | 08 Jan 2025 14:56 |
Status: | Published |
Publisher: | American Institute of Physics |
Identification Number: | 10.1063/5.0038950 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:172053 |